Derailing-block



(No Model.) MQGLELLAN MITCHELL.

DERAILING BLOGK.

N0. 522,300. I Patent.edJu1y'3,1894.

WITNESSES: 4 441W wwmm A TTOHN E Y 8.

UNITED STATES PATENT OFFICE.

MCCLELLAN MITCHELL, OF OMAHA, NEBRASKA.

DERAlLlNG-BLOCK.

SPECIFICATION formingpart of Letters Patent No. 522,300, dated July 3,1894 Application filed August 14, 1393. Serial No. 483,169. (No model.)

To all whom it may concern.-

Be it known that I, McCLELLAN MITCHELL, of Omaha, in the county ofDouglas and State of Nebraska, have invented certain useful Improvements in Derailing-Blocks; and I do hereby declare that thefollowing is a full, clear, and exact description of the-invention, suchas will enable others skilled in the art to which it appertains to makeand use the same, reference being had to the accompanying drawings,which form a part of this speci tioation.

This invention has relation to a new and novel car derailing block, theobject being to provide a means that will prevent cars upon the sidetracks tobe blown upon the main track.

In the accompanying drawings, Figure l shows a top view of an ordinaryrailway system, showing a central switch arranged in combination with myimproved car derailer. Fig. 2 shows a side elevation thereof, while Fig.3 shows an end view.

Similar letters and figures of reference refer to corresponding parts.

My device comprises essentially a metallic block A which is preferablyslightly curved and is provided with a journal B, by means of which saidblock is pivotally secured to an ordinary bridge iron or block 0.

Upon one side my derailing block'is provided with an upwardly extendingflange 1, which is curved and is provided centrally with a depression 2,and upon the remaining edge with the stub guard 3, as shown more clearlyin Fig. 3. Upon the side adjoining the stub car 3, I have furtherprovided the ear 4 by means of which this derailing block may beattached between suitable operating bars 5. The bridge bar 0 which givessupport to the derailing block, is secured upon the side of the trackupon which the car is to be derailed.

This derailing block works freely upon its seating and in operatingswings snugly over one of the rails, as shown in Fig. 1. However, it isnecessary that the block should swing a suitable distance beyond therail X, for instance, I provide an additional stub rail 6, upon whichthe derailing blockrests in conjunction with the mainrail. The operatingthe arrow and toward the main track should strike this block, the flangeof the wheel would work Within a groove 2 and be guided by means of theupwardly extending flange 1, olfthe traok, so as to completely derailthe car and so prevent it from going upon the main track. However,should the switch be closed, so that a car would be shunted from theopposite direction, it would enter the switch and encounter thederailing block upon the curved side. Now as this block is normally heldin a closed position by means of a spring, it would be forced out of thepath of the wheel as theloop 8 would ride upon the bar 5, and a portionof the spring 11 readily permitting this shortening of the rod. Ofcourse as soon as the wheel has passed, the block would be forced intoits closed position.

These blocksare made both right handed and left handed so that the carswould be thrown'to either side. 7 They can be adapted to any ordinaryswitch, or if desired, can be operated by an ordinary forcing lever,which can be arranged to work independent of the switch.

These blocks are adapted to be used on side tracks and spurs and will ofcourse derail any car before it reaches the main track.

The device is noticeable because of its extreme simplicity; and,

' Having thus described my said invention, what I claim as new, anddesire to secure by United States Letters Patent, is-i p In a carderailing device, the combination of thefollowinginstr'umentalities,to-wit: the

bridge block, 0, the derailing block, A, provided with the journal, B,at one end working within a suitable opening of said bridge block, saidbridge block being curved and provided upon one side with an upwardlyextending flange, 1, and a central depression, 2, and upon the remainingedge with a stub guard, 3, the integral ear, 4:, to which is secured theoperating bar, 5, said bridge block, 0, being secured upon the outsideof one of the car rails, said operating bar, 5,being spring actuated bymeans of the loop, 8, provided with the nuts, 9 and 10, giving apurchase to the spring, 11, said derailing block being so arranged thata car Wheel striking said block from one end will permit the same toswing outward from the car rail by virtue of the spring actuated rod, 5,said derailing block normally resting upon one of said rails and beingso arranged that a wheel approaching :5 from the opposite directionwould engage the block and be derailed, all substantially as and for thepurpose set forth.

In testimony whereof I affix my signature in presence of two witnesses.

MCGLELLAN MITCHELL. Witnesses:

A. Moons, G. W. Suns.

